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#ifndef _LINUX_BINFMTS_H
#define _LINUX_BINFMTS_H

#include <linux/capability.h>

struct pt_regs;

/*
 * MAX_ARG_PAGES defines the number of pages allocated for arguments
 * and envelope for the new program. 32 should suffice, this gives
 * a maximum env+arg of 128kB w/4KB pages!
 */
#define MAX_ARG_PAGES 32

/* sizeof(linux_binprm->buf) */
#define BINPRM_BUF_SIZE 128

#ifdef __KERNEL__

/*
 * This structure is used to hold the arguments that are used when loading binaries.
 */
struct linux_binprm{
        char buf[BINPRM_BUF_SIZE];
        struct page *page[MAX_ARG_PAGES];
        struct mm_struct *mm;
        unsigned long p; /* current top of mem */
        int sh_bang;
        struct file * file;
        int e_uid, e_gid;
        kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
        void *security;
        int argc, envc;
        char * filename;        /* Name of binary as seen by procps */
        char * interp;          /* Name of the binary really executed. Most
                                   of the time same as filename, but could be
                                   different for binfmt_{misc,script} */
        unsigned long loader, exec;
};

/*
 * This structure defines the functions that are used to load the binary formats that
 * linux accepts.
 */
struct linux_binfmt {
        struct linux_binfmt * next;
        struct module *module;
        int (*load_binary)(struct linux_binprm *, struct  pt_regs * regs);
        int (*load_shlib)(struct file *);
        int (*core_dump)(long signr, struct pt_regs * regs, struct file * file);
        unsigned long min_coredump;     /* minimal dump size */
};

extern int register_binfmt(struct linux_binfmt *);
extern int unregister_binfmt(struct linux_binfmt *);

extern int prepare_binprm(struct linux_binprm *);
extern void remove_arg_zero(struct linux_binprm *);
extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
extern int flush_old_exec(struct linux_binprm * bprm);
extern int setup_arg_pages(struct linux_binprm * bprm);
extern int copy_strings(int argc,char __user * __user * argv,struct linux_binprm *bprm);
extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
extern void compute_creds(struct linux_binprm *binprm);
extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
extern int set_binfmt(struct linux_binfmt *new);

#endif /* __KERNEL__ */
#endif /* _LINUX_BINFMTS_H */